Grille for air duct



FIG. 1 is a top view of the grille for air duct showing my new design.

FIG. 2 is a bottom view thereof.

FIG. 3 is a side view thereof, the side view substantially identical onall sides, the front, and the back.

FIG. 4 is a top isometric view thereof.

FIG. 5 is a bottom isometric view thereof in a fully open position.

FIG. 6 is a bottom isometric view thereof in a partially open position;and,

FIG. 7 is a bottom isometric view thereof in a partially fully closedposition.

CLAIM The ornamental design for a grille for air duct, as shown anddescribed.